14487221 has 4 divisors (see below), whose sum is σ = 16556832. Its totient is φ = 12417612.

The previous prime is 14487197. The next prime is 14487223. The reversal of 14487221 is 12278441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12278441 = 7 ⋅1754063.

It is a cyclic number.

It is not a de Polignac number, because 14487221 - 2²² = 10292917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14487223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1034795 + ... + 1034808.

It is an arithmetic number, because the mean of its divisors is an integer number (4139208).

Almost surely, 2^14487221 is an apocalyptic number.

It is an amenable number.

14487221 is a deficient number, since it is larger than the sum of its proper divisors (2069611).

14487221 is an equidigital number, since it uses as much as digits as its factorization.

14487221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2069610.

The product of its digits is 3584, while the sum is 29.

The square root of 14487221 is about 3806.2082181615. The cubic root of 14487221 is about 243.7782911716.

The spelling of 14487221 in words is "fourteen million, four hundred eighty-seven thousand, two hundred twenty-one".